#include <iostream>
#include <cstdlib>
#include <windows.h>
using namespace std;
int main(){
	int a=0;
	
	while(a<55){
		system("cls");
		
		int b=0;
		while(b<a){
			b=b+1;
			cout <<" ";
		}
		
		cout <<("@");
		Sleep(20);
	
		a=a+1;
	}
	
	return 0;
}
